CN221071018U - Methanol fuel filling system - Google Patents

Abstract

The utility model provides a methanol fuel filling system, which comprises a filling unit and an inerting unit, wherein the filling unit comprises a filling inlet arranged on an onshore filling vehicle and a filling outlet arranged on a ship fuel tank, the filling inlet and the filling outlet are communicated through a pipeline, a centrifugal pump is arranged on the pipeline, the inerting unit comprises an inerting gas inlet arranged on an inerting gas tank, the inerting gas inlet is communicated with the filling unit through a pipeline, and the methanol fuel filling system further comprises a liquid dropping disc, a liquid dropping disc is arranged below the filling unit, and a plurality of discharge valves are arranged at the bottom of the liquid dropping disc; the technical problems that the service life of a ship is influenced and potential safety hazards exist in the existing methanol fuel filling system are solved, and the methanol fuel filling system can be widely applied to the technical field of ship fuel filling systems.

Description

Methanol fuel filling system

Technical Field

The utility model relates to the technical field of ship fuel filling systems, in particular to a methanol fuel filling system.

Background

In recent years, as the pressure of emissions reduction of ships has increased, the shipping industry has accelerated the search for clean fuel applications. The use of methanol fuels is one of the key solutions for achieving decarbonization goals in the current shipping industry. The methanol molecules do not contain sulfur, and sulfur oxides can not be generated after combustion, so that the requirements of IMO on sulfur oxide emission control are completely met; in addition, since methanol does not contain carbon-carbon bonds that produce particulates, particulates are not produced either; furthermore, the temperature of methanol combustion is lower, and the low temperature can reduce the emission of nitrogen oxides. Thus, methanol fuels are becoming increasingly popular as a clean burning low carbon fuel.

Methanol fuel is typically stored in an onshore fueling vehicle that requires the fueling system to be used to fueling it into a fuel tank on the vessel. The prior methanol fuel filling system generally comprises a filling unit and an inerting unit, wherein the filling unit pumps the methanol fuel in the filling vehicle into a fuel tank through a centrifugal pump to realize filling of the methanol fuel; before and after filling, the inerting unit is used for inerting the filling unit by introducing inert gas into the filling unit through the inerting gas tank, so that air or residual methanol fuel in the pipeline is removed completely, and the filling risk is reduced. However, the current methanol fuel filling system is not provided with a fuel receiving device, and once the filling unit leaks, methanol fuel can drip onto a deck of a ship under the influence of gravity of the methanol fuel, so that the deck is corroded, and the service life of the ship is influenced; in addition, because the flammability of the methanol fuel is very high, once the methanol fuel dropped on the deck encounters open fire or heat source, the methanol fuel is easy to cause fire and even explode, and potential safety hazards exist. The above problems are to be solved.

Disclosure of utility model

The application aims to provide a methanol fuel filling system, which aims to solve the technical problems that the service life of a ship is influenced and potential safety hazards exist in the existing methanol fuel filling system.

The embodiment of the application provides a methanol fuel filling system, which comprises a filling unit and an inerting unit, wherein the filling unit comprises a filling inlet arranged on an onshore filling vehicle and a filling outlet arranged on a ship fuel tank, the filling inlet and the filling outlet are communicated through a pipeline, a centrifugal pump is arranged on the pipeline, the inerting unit comprises an inerting air inlet arranged on an inerting air tank, the inerting air inlet is communicated with the filling unit through a pipeline, and the methanol fuel filling system further comprises a liquid dropping disc, the liquid dropping disc is arranged below the filling unit, and a plurality of discharge valves are arranged at the bottom of the liquid dropping disc.

In one embodiment, a filter and a first pressure gauge are sequentially arranged on a pipeline between the filling inlet and the filling outlet, and the filter is arranged at the downstream of the centrifugal pump.

In one embodiment, a control valve and a first pneumatic control valve are also connected in series on the pipeline between the filling inlet and the filling outlet.

In one embodiment, the device further comprises a backflow unit, wherein the backflow unit is arranged above the drip tray, the backflow unit comprises a backflow inlet arranged on a ship fuel tank and a backflow outlet arranged on an onshore filling vehicle, the backflow inlet is communicated with the backflow outlet through a pipeline, and a second pressure gauge and a second pneumatic control valve are arranged on the pipeline.

In one embodiment, a first air inlet valve is arranged on a pipeline between the inert gas inlet and the filling unit, the inert gas inlet is communicated with the backflow unit through a pipeline, and a second air inlet valve is arranged on a pipeline between the inert gas inlet and the backflow unit.

In one embodiment, the marine vessel further comprises a bleed unit comprising a first bleed valve and a second bleed valve, the first bleed valve being disposed upstream of the filling unit, the second bleed valve being disposed downstream of the return unit, both the first bleed valve and the second bleed valve being in communication with the marine vessel exhaust mast.

In one embodiment, the device further comprises a sampling unit comprising a first sampling valve and a second sampling valve, the first sampling valve being arranged upstream of the filling unit, the second sampling valve being arranged downstream of the backflow unit.

In one embodiment, the number of the filling units and the number of the backflow units are two, the two filling units are connected in parallel, and the two backflow units are connected in parallel.

In one embodiment, a safety valve is further arranged on the pipeline between the filling inlet and the filling outlet.

In one embodiment, the device further comprises a dirty cabin, the safety valve is communicated with the dirty cabin through a pipeline, and an upper limit liquid level switch is arranged on the dirty cabin.

The utility model provides a methanol fuel filling system, which has the beneficial effects that: the drip tray is arranged below the filling unit and used for collecting leaked methanol fuel, so that the methanol fuel is prevented from dripping on a deck of a ship to corrode the deck, and the service life of the deck is prolonged; in addition, the probability of burning or explosion of the leaked methanol fuel can be reduced, and the safety of the filling system is improved; moreover, the leaked methanol fuel is collected through a discharge valve at the bottom of the drip tray, so that recycling is realized, waste of the methanol fuel is avoided, and the filling cost is reduced; the utility model has the advantages of simple structure, convenient use, high safety and low filling cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a methanol fuel filling system according to an embodiment of the present application;

FIG. 2 is a schematic diagram of the fill and return units of the methanol fuel fill system shown in FIG. 1;

fig. 3 is a schematic diagram of the filling unit, the reflow unit, and the inerting unit of the methanol fuel filling system shown in fig. 1.

The symbols in the drawings illustrate:

1. a filling unit; 101. a filling inlet; 102. a filling outlet; 103. a centrifugal pump; 104. a filter; 105. a first pressure gauge; 106. a control valve; 107. a first pneumatic control valve; 108. a safety valve;

2. A reflow unit; 201. a return inlet; 202. a return outlet; 203. a second pneumatic control valve; 204. a second pressure gauge;

3. An inerting unit; 301. an inert gas inlet; 302. a first intake valve; 303. a second intake valve;

4. a bleed unit; 401. a first bleed valve; 402. a second bleed valve;

5. A sampling unit; 501. a first sampling valve; 502. a second sampling valve;

6. a dirty cabin; 601. an upper limit liquid level switch;

7. a drip tray; 701. a discharge valve.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

It should be noted that, the positional or positional relationship indicated by the terms such as "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", etc. are based on the positional or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and are not to be construed as indicating or implying that the apparatus or element in question must be provided with a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Referring to fig. 1, a schematic structural diagram of a methanol fuel filling system according to an embodiment of the application is shown, for convenience of explanation, only the portions related to the embodiment are shown, and the details are as follows:

in one embodiment, please refer to fig. 2-3, a methanol fuel filling system for filling methanol fuel in an onshore filling vehicle into a fuel tank on a ship comprises a filling unit 1 and an inerting unit 3, wherein the filling unit 1 comprises a filling inlet 101 arranged on the onshore filling vehicle and a filling outlet 102 arranged on the ship fuel tank, the filling inlet 101 and the filling outlet 102 are communicated through a pipeline, and a centrifugal pump 103 is arranged on the pipeline; the inerting unit 3 comprises an inert gas inlet 301 arranged on the inert gas tank, and the inert gas inlet 301 is communicated with the filling unit 1 through a pipeline; the filling system further comprises a drip tray 7, the drip tray 7 is arranged below the filling unit 1, and a plurality of discharge valves 701 are arranged at the bottom of the drip tray 7;

the drip tray 7 is arranged below the filling unit 1 and used for collecting leaked methanol fuel, so that the methanol fuel is prevented from dripping on a ship deck to corrode the ship deck, and the service life of the deck is prolonged; in addition, the probability of burning or explosion of the leaked methanol fuel can be reduced, and the safety of the filling system is improved; moreover, the leaked methanol fuel is collected through the discharge valve 701 at the bottom of the drip tray 7, so that recycling is realized, waste of the methanol fuel is avoided, and the filling cost is reduced.

Specifically, referring to fig. 2, a filter 104 and a first pressure gauge 105 are sequentially disposed on a pipeline between the filling inlet 101 and the filling outlet 102, the filter 104 is disposed downstream of the centrifugal pump 103, and is used for filtering the methanol fuel, filtering out large particle impurities in the methanol fuel, and facilitating subsequent use; the first pressure gauge 105 is used for monitoring the pressure of the methanol fuel during the filling process; a control valve 106 and a first pneumatic control valve 107 are also connected in series on the pipeline between the filling inlet 101 and the filling outlet 102 and are used for controlling the feeding and cutting off of the methanol fuel and regulating the flow of the methanol fuel, the control valve 106 and the first pneumatic control valve 107 are used for one time, so that accidents in the filling process are prevented, and the reliability and the safety of the filling system are improved; a safety valve 108 is further arranged on a pipeline between the filling inlet 101 and the filling outlet 102, and when the pressure in the pipeline exceeds a safety value, the safety valve 108 is automatically opened to release, so that the safety of the filling system is ensured;

Referring to fig. 1 and 2, the filling system further includes a backflow unit 2, the backflow unit 2 is disposed above the drip tray 7, the backflow unit 2 includes a backflow inlet 201 disposed on a ship fuel tank and a backflow outlet 202 disposed on an onshore filling vehicle, the backflow inlet 201 and the backflow outlet 202 are communicated through a pipeline, a second pressure gauge 204 and a second pneumatic control valve 203 are disposed on the pipeline, the second pressure gauge 204 is used for monitoring the pressure of the mixture of methanol vapor and nitrogen in the backflow process, and the second pneumatic control valve 203 is used for controlling the feeding and cutting off of the mixture of methanol vapor and nitrogen and regulating the flow rate of the mixture;

Referring to fig. 2 and 3, a first air inlet valve 302 is arranged on a pipeline between an inert gas inlet 301 and the filling unit 1, the inert gas inlet 301 is communicated with the backflow unit 2 through a pipeline, a second air inlet valve 303 is arranged on a pipeline between the inert gas inlet 301 and the backflow unit 2, and the first air inlet valve 302 and the second air inlet valve 303 are used for controlling the inlet and the cutoff of nitrogen;

Referring to fig. 1 and 2, the filling system further comprises a relief unit 4, the relief unit 4 comprising a first relief valve 401 and a second relief valve 402, the first relief valve 401 being arranged upstream of the filling unit 1, the second relief valve 402 being arranged downstream of the return unit 2, both the first relief valve 401 and the second relief valve 402 being in communication with the vessel exhaust mast;

when the filling system is used or stopped or has a fault emergency trip, the inert gas inlet 301, the first air inlet valve 302 and the second air inlet valve 303 are opened, nitrogen in the inert gas tank is introduced into the filling pipeline and the return pipeline through the inert gas inlet 301, the whole pipeline is inerted, air or residual methanol or methanol steam in the pipeline is discharged into a ship exhaust mast through the first discharge valve 401 and the second discharge valve 402, and the safety of the filling system is ensured.

In one embodiment, referring to fig. 1 and 2, the filling system further comprises a sampling unit 5, the sampling unit 5 comprising a first sampling valve 501 and a second sampling valve 502, the first sampling valve 501 being disposed upstream of the filling unit 1, the second sampling valve 502 being disposed downstream of the backflow unit 2; after the filling process and the inerting process are finished, sampling is performed through the first sampling valve 501 and the second sampling valve 502 respectively, and whether the sample contains the methanol fuel which is not removed is detected, so that the safety of the filling system is improved.

In one embodiment, referring to fig. 2 and 3, the number of the filling units 1 and the number of the backflow units 2 are two, the two filling units 1 are connected in parallel, the two backflow units 2 are connected in parallel, and the filling system is prevented from being influenced when the filling system is stopped or in emergency trip or maintenance, so that the filling system can be ensured to operate normally.

In one embodiment, referring to fig. 1 and 2, the filling system further includes a dirty tank 6, the safety valve 108 is communicated with the dirty tank 6 through a pipeline, and an upper limit liquid level switch 601 is arranged on the dirty tank 6; by arranging the safety valve 108 to be communicated with the pollution cabin 6, the direct discharge of the methanol steam in the pipeline to the atmosphere is avoided, the safety of the filling system is improved, the waste of methanol fuel is avoided, and the filling cost is reduced; the upper limit liquid level switch 601 is used for judging the height of the liquid level in the dirty cabin 6, when the liquid level in the dirty cabin 6 is higher than the upper limit liquid level switch 601, the upper limit liquid level switch 601 can give an alarm, and at the moment, the dirty cabin 6 needs to be immediately discharged, so that the safety of the filling system is improved.

The following describes the operation principle of the methanol fuel filling system with reference to fig. 1 to 3 as follows:

When the device is used, the first air inlet valve 302, the second air inlet valve 303, the control valve 106, the first pneumatic control valve 107, the second pneumatic control valve 203, the first discharge valve 401 and the second discharge valve 402 are opened, the inert gas inlet 301 is opened, nitrogen in the inert gas tank is introduced into the filling pipeline and the return pipeline through the inert gas inlet 301, the whole pipeline is inerted, air or residual methanol or methanol steam in the pipeline is discharged into a ship exhaust mast through the first discharge valve 401 and the second discharge valve 402, and then is discharged through the exhaust mast, and after inerting is finished, the inert gas inlet 301, the first air inlet valve 302, the second air inlet valve 303, the first discharge valve 401 and the second discharge valve 402 are closed;

Opening the filling inlet 101, the filling outlet 102, the reflux inlet 201 and the reflux outlet 202, starting the centrifugal pump 103, filling methanol fuel in the filling vehicle into a fuel tank on a ship under the action of the centrifugal pump 103, and flowing a mixed gas of methanol steam and nitrogen generated in the filling process into the filling vehicle through the reflux unit 2;

After filling, closing a filling pump, a filling inlet 101, a filling outlet 102, a backflow inlet 201 and a backflow outlet 202, opening an inert gas inlet 301, a first air inlet valve 302, a second air inlet valve 303, a first discharge valve 401 and a second discharge valve 402, inerting the whole pipeline again, closing all valves after inerting, sampling through a first sampling valve 501 and a second sampling valve 502 respectively, detecting whether the sample contains the methanol fuel which is not removed, and if the detection result is not qualified, inerting again until the detection result is qualified; finally, the leaked methanol fuel is collected through the discharge valve 701, so that subsequent treatment is facilitated.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims (10)

1. The utility model provides a methanol fuel filling system, includes filling unit and inerting unit, the filling unit is including setting up the filling entry on the on-shore filling car and setting up the filling export on the boats and ships fuel jar, the filling entry with the filling export passes through the pipeline intercommunication, is equipped with the centrifugal pump on the pipeline, inerting unit is including setting up the inert gas entry on the inert gas jar, the inert gas entry pass through the pipeline with fill unit intercommunication, its characterized in that still includes the drip tray, the below of filling unit sets up the drip tray, the bottom of drip tray is equipped with a plurality of discharge valve.

2. A methanol fueling system as in claim 1 wherein a filter and a first pressure gauge are sequentially disposed on the line between the fueling inlet and the fueling outlet, the filter being disposed downstream of the centrifugal pump.

3. A methanol fuel fill system as in claim 1, wherein a control valve and a first pneumatic control valve are also connected in series in the line between the fill inlet and the fill outlet.

4. A methanol fueling system as in claim 1 further comprising a return unit disposed above the drip tray, the return unit including a return inlet disposed on a marine fuel tank and a return outlet disposed on an onshore fueling vehicle, the return inlet and the return outlet being in communication via a conduit having a second pressure gauge and a second pneumatic control valve disposed thereon.

5. A methanol fueling system as in claim 4 wherein a first intake valve is provided in a line between the inert gas inlet and the fueling unit, the inert gas inlet being in communication with the recirculation unit via a line, and a second intake valve is provided in a line between the inert gas inlet and the recirculation unit.

6. A methanol fuel fill system as in claim 4, further comprising a bleed unit comprising a first bleed valve and a second bleed valve, the first bleed valve being disposed upstream of the fill unit, the second bleed valve being disposed downstream of the return unit, both the first bleed valve and the second bleed valve being in communication with a vessel exhaust mast.

7. A methanol fueling system as in claim 4 further comprising a sampling unit comprising a first sampling valve and a second sampling valve, the first sampling valve being disposed upstream of the fueling unit and the second sampling valve being disposed downstream of the back flow unit.

8. A methanol fueling system as in claim 4 wherein the number of both the fueling units and the backflow units are two, the two fueling units being connected in parallel and the two backflow units being connected in parallel.

9. A methanol fuel fill system as in claim 1, wherein a relief valve is further provided on the line between the fill inlet and the fill outlet.

10. A methanol fueling system as in claim 9 further comprising a dirty tank, wherein the safety valve is in communication with the dirty tank via a conduit, and wherein an upper limit level switch is provided on the dirty tank.